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Liquid ethylenediamine recovery pretreatment equipment and pretreatment recovery method thereof

A technology for recycling and processing ethylenediamine, applied in chemical instruments and methods, chemical/physical/physical-chemical processes, chemical/physical/physical-chemical stationary reactors, etc. , the effect of reasonable structure

Pending Publication Date: 2021-04-09
盐城仁恒化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the shortcoming existing in the prior art, and propose a kind of liquid ethylenediamine recovery pretreatment equipment and its pretreatment recovery method, it can realize the sufficient reaction of liquid ammonia steam and MEA steam, and then can Provide basic guarantee for the recovery of liquid ethylenediamine, and at the same time solve problems such as easy blockage of nozzles

Method used

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  • Liquid ethylenediamine recovery pretreatment equipment and pretreatment recovery method thereof
  • Liquid ethylenediamine recovery pretreatment equipment and pretreatment recovery method thereof
  • Liquid ethylenediamine recovery pretreatment equipment and pretreatment recovery method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0036] refer to Figure 1-4, a liquid ethylenediamine recovery pretreatment equipment, including a mixing reaction box 1 and a recovery treatment equipment 2, the bottom of the mixing reaction box 1 is equipped with a funnel cover 6, the funnel cover 6 is connected to the recovery treatment equipment 2 through a delivery pipe 3, A corresponding pump body can be installed on the conveying pipe 3 to realize the pumping of reactants; a recovery pipe 4 is installed on the recovery processing equipment 2, and an electromagnetic valve 5 is installed on the recovery pipe 4, and the upper end of the mixing reaction box 1 runs through and is fixedly connected with a fixed valve. Block 14, and the upper end of mixing reaction box 1 is equipped with negative pressure blower 11, and the bottom of negative pressure blower 11 is equipped with mounting plate 7, and mounting plate 7 is connected with mixing reaction box 1 by bolt; A first feed pipe 12 is installed, and an air outlet pipe 13 i...

Embodiment 2

[0054] A kind of liquid ethylenediamine reclaims pretreatment equipment, and embodiment 1 is similar, and difference is,

[0055] Both the nozzle hole 35 and the through hole 26 are provided with an adjustable nozzle 36, such as Figure 5-Figure 6 As shown, the adjustable nozzle 36 is composed of a nozzle 37 and a nozzle 38. The nozzle 38 is composed of a rotating ball 381, a different diameter connecting pipe 382 and a plugging nozzle 383. The rotating ball 381 is flexibly connected to the different diameter connecting pipe 382 and the nozzle 37. In between, the end of the plugging nozzle 383 is closed, and the circumference of the plugging nozzle 383 is provided with a plurality of nozzle holes 384, and the inner diameter of the nozzle holes 384 gradually increases from the inside to the outside. Under the action of the rotating ball 381, the different-diameter connecting pipe 382 can drive the nozzle, so as to realize the adjustable angle of 0-60 degrees along the axial dir...

Embodiment 3

[0058] A kind of liquid ethylenediamine reclaims pretreatment equipment, and embodiment 1 is similar, and difference is,

[0059] The rotating ball 381 has a spherical shell structure, and the different-diameter connecting pipe 382 connects the rotating ball 381 and the nozzle 38, and the outer diameter gradually decreases from one end close to the rotating ball 381 to the other end, so as to locally accelerate the flow.

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Abstract

The invention discloses liquid ethylenediamine recovery pretreatment equipment which comprises a mixed reaction box and recovery treatment equipment; a funnel cover is mounted at the bottom of the mixed reaction box and connected with the recovery treatment equipment through a conveying pipe, a recovery pipe is mounted on the recovery treatment equipment, and an electromagnetic valve is mounted on the recovery pipe; a fixed block is fixedly connected to the upper end of the mixed reaction box in a penetrating mode, a negative pressure fan is mounted at the upper end of the mixed reaction box, a first feeding pipe is mounted at the air inlet end of the negative pressure fan, and an air outlet pipe is mounted at the air outlet end of the negative pressure fan; the tail end of an adjustable spray head is closed, spray holes are circumferentially formed in the outer ring of the closed end of the tail end in a surrounding mode, the spraying speed is increased, and meanwhile, the problem that a traditional nozzle is prone to dust accumulation is solved. The liquid ethylenediamine recovery pretreatment equipment is reasonable in structure, can realize full reaction of liquid ammonia steam and MEA steam, and further can provide basic guarantee for recovery of liquid ethylenediamine.

Description

technical field [0001] The invention relates to the technical field of liquid ethylenediamine recovery, in particular to a liquid ethylenediamine recovery pretreatment equipment and a pretreatment recovery method. Background technique [0002] The prior art discloses an ethylenediamine (EDA) wastewater recovery process with the application number CN201410573610.0, which mainly solves the problems of low EDA recovery rate and high amine-containing wastewater treatment costs in the prior art. The invention treats the wastewater containing a small amount of entrainer and EDA in the EDA recovery tower through pressurized rectification. The entrainer and water are moved from the top of the tower into the phase separation tank for phase separation, and the organic phase (mainly containing the entrainer) is circulated to the dehydration tower. As an entrainer, the wastewater phase (mainly containing water) enters the high-efficiency coalescence separator to separate the residual en...

Claims

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Application Information

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IPC IPC(8): B01J19/18B01J4/00C07C209/16C07C211/10
CPCB01J19/18B01J19/0066B01J19/0053B01J4/001C07C209/16C07C211/10
Inventor 林森
Owner 盐城仁恒化工有限公司
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